Authors: A.A. Krasovskii, Institute of Mathematics and Mechanics, Ural Branch of the Russian Academy of Sciences, A.M. Tarasyev, Institute of Mathematics and Mechanics, Ural Branch of the Russian Academy of Sciences

Authors: N.N. Krasovskii, Institute of Mathematics and Mechanics, Ural Branch of the Russian Academy of Sciences, A.N. Kotel'nikova, Institute of Mathematics and Mechanics, Ural Branch of the Russian Academy of Sciences